package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;

    /**
     * 新增套餐
     * @param setmealDTO
     */
    @Override
    @Transactional
    public void saveWithDish(SetmealDTO setmealDTO) {
        log.info("新增套餐：{}", setmealDTO);

        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.insert(setmeal);

        Long id = setmeal.getId();
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes != null && !setmealDishes.isEmpty()) {
            setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(id));
            setmealDishMapper.insertBatch(setmealDishes);
        }
    }

    /**
     * 套餐分页查询
     * @param setmealPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> pageInfo = (Page<SetmealVO>) setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(pageInfo.getTotal(), pageInfo.getResult());
    }

    /**
     * 删除套餐
     * @param ids
     */
    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        if (ids != null && !ids.isEmpty()) {
            ids.forEach(id -> {
                SetmealVO setmeal = setmealMapper.getById(id);
                // 起售中的套餐不能删除
                if (setmeal.getStatus() == StatusConstant.ENABLE) {
                    throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
                }
                setmealMapper.deleteById(id);
                setmealDishMapper.deleteBySetmealId(id);
            });
        }
    }

    /**
     * 根据id查询套餐
     * @param id
     * @return
     */
    @Override
    @Transactional
    public SetmealVO getByIdWithDish(Long id) {
        SetmealVO setmealVO = setmealMapper.getById(id);
        setmealVO.setSetmealDishes(setmealDishMapper.getByDishId(id));
        return setmealVO;
    }

    /**
     * 修改套餐
     * @param setmealDTO
     */
    @Override
    @Transactional
    public void updateWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        // 修改套餐基本信息
        setmealMapper.update(setmeal);
        //  删除套餐对应的菜品数据
        setmealDishMapper.deleteBySetmealId(setmealDTO.getId());
        // 重新插入套餐对应的菜品数据
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes != null && !setmealDishes.isEmpty()) {
            setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(setmealDTO.getId()));
            setmealDishMapper.insertBatch(setmealDishes);
        }
    }

    /**
     * 启用禁用套餐
     * @param status
     * @param id
     * @return
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .build();
        setmealMapper.update(setmeal);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
